Carbureting-screen



F. W. LAPHAM.

CARBURETING SCREEN.

APPLICATION FILED SEPT. 18, 1919.

Patented SQpt. 21, 192% 2 SHEETS-SHEET I F. W. LAP'HAM.

CARBURETING SCREEN.

APPLICATION FILED SEPT, 18. 1919.

Patented Sept. 211; mm

2 SHEETS-SHEET 2-.

' the cylinder tiled: or

. and 12, with a lining e n no. .i h lml u CALEBURETTNG-SSBEEN.

flginlicetion filed September 18, 1919.

provide a screen arranged at or near the intake valve, and which isadapted to thoroughly atomize and vaporize the charge prior to itspassage into the cylinder.

A further object otthe invention is to provide screens of the abovementioned character, which are secured to and carried by the cylinderhead gasket, thereby rendering the installation of the screens simpleand easy.

Uther objects and advanta es of the invention will be apparent duringthe course of the following description.

Tn the accompanying drawings forming a part of this specification, andin which like numerals are employed to designate lilre parts throughoutthe some,

Figure l is a plan. view of a device embodying my invention,

F 2 is an ed e elevation of the same,

Fig. 3 is e si e elevation of an engine, parts being broken away, withmy device applied thereto,

Fig. i is a detail section tallen on line T 4-4 of Fig. 1, and

Fig. 5 is a plan view or one screen. Tn the d "swings numeral 5designates inders formed therein, and 6 is the cylinder head, secured tothe block by bolts 7 or the like.

In connection with each cylinder, there are intake and exhc valves 8 and9, the engine shown bein 1 one Ford type, while the invention is senserestricted for use in connection v this character of engine.

The numeral 10 cylinder head gasket, of any well lrrown or preferredtype, the same being hetween the block 5 and heed 6,-es @llQW'fiL', Thisgasket comprises upper and lower rnetellic plates 11 8 therebetween,which may be formedot ashestos or the hire. The plates-l1 and 12 areheld together by metallic Strips 1 formed in the moterial oiSpecification of Letters lPateut.

mg, having the cyl- Serial No. 324,674.

the lower plate 12, folded over the edges of the top plate 11, at thecylinder openings 15. The cylinder openings 15 have enlargements 16, forthe valves, as shown. The gasket 10 has holes 17 for the bolts, andopenings 18 for the water circulation.

At each inlet valve opening 16, the folded strip 1% is split at 17, l,and this split ma extend between points 18', Fig. 5.

A cylindrical tubular screen 19 is arranged within each intake valveopening 16, and surrounds the intake valve 8, as shown. Each screen 19Each screen is formed of a strip of wire gauzefhaving both edgesfinished, and the ends of the strip may overlap at 20, and be securedtogether by wire staples, solder or the like. T he lower edge of thegauze strip is bent inwardly and upwardly, "forming a reinforcing andattaching flange 21, a portion 22 of which is bent outwardlyhorizontally to be inserted within the slitli. This attaching portion 22is thereby arranged between the plates 11 and 12, and is soldered orotherwise secured thereto.

if screening with an unfinished edge is used, the top. edge of thescreen is bent inwardly and downwardly, forming reinforcing andattaching flange approximately one-eighth of inch. high.

Thave found that suitable results are obtainable by having thegauze of#30 mesh, but any other suitable size may be employed. The gauze may beformed of an alloy eni- .hodying 68 to 70 per cent. of nickel, per

cent. of iron, and the remainder of copper. The composition oi the alloymay be widely varied, and the gauze may be formed of other suitablematerial, if desired. The mesh is also preferably woven from wire of.012 inch in meter.

Wi h the sci eon arranged around the inlet valve, such screen will serveto atomize the incoming charge and also to vaporize the 1. for thecylinder head of an rot/10D. engine, and. a scree- .L Y y /L n JatentedSept. 21,

has both ends open, as shown.

cured to the gasket and adapted to be arranged near the intake valve ofthe engine.

2. A gasket for the cylinder head of an internal combustion engine, anda screen secured to and carried by the gasket and surrounding the intakevalve of the engine.

3. A gasket for the cylinder head of a multi-cylinder internalcombustion engine, and a plurality oftubular Wire gauze screens securedtoand carried by the gasket and adapted to surround the intake valves ofthe engine, said screens having both ends open.

4. A gasket for the cylinder head of an internal combustion engine,said'gasket having upper and lower plates, and a Wire gauze screen tosurround the intake valve of the engine, said screen being provided nearits lower end With a flange having a portion adapted to be insertedbetween the plates of the gasket, and means to secure such portion inplace between the plates.

5. A gasket for the cylinder head of an internal combustion engine, anda carbureting screen centered by the gasket around the intake valve ofthe engine.

FRANK W. LAPHAM.

